Automobile-door latch



L. A. SCHUMAKER.

AUTOMOBILE DOOR LATCH- APPLICATION min NOV. 19. 1920.

Patented Oct.

18, 1921. 2 sums-snzzr Mmwxa.

L. A. SC'HUMAKER.

} AUTOMOBILE DOOR LATCH. APPLICATION FILED NOV. 19. 1920.

1,393,911. Patented (m 18, 1921'.

2 SHEET$SHEET 2.

.Jly A;

EA E

rmwntoz atkozmq UNITED STATES PATENT OFFICE.

AUTOMOBILE-D0 0R LATCH.

T 0 all whom it may concern Be it known that I, LAWRENCE A. SCHU- MAKER,a citizen of the United States, residing at Michigan City, in the countyof La- Indiana, have invented certain new and useful 'Improvements in anAutomobile-Door Latch, of which the following is a specification.

his invention relates to an automobile door latch and has for itsprincipal object to provide a device of this nature which may be usedwith automobile doors or doors of buildings or other structures andwhich is provided with rigidly in a closed position thus rattling and atwind and cold.

Another object of the invention is to provide a latch which does notrequire the slampreventing the same time keep out the door is in itsclosed position.

A still further object of the invention is to genera ly improve uponlatches of this character by providing a device which will be extremelysimple, durable and inexpensive in construction, one which is efficientand reliable in operation, and well adapted to the purpose for which itis designed.

With these and numerous other objects in view, the invention resides incertain novel features of construction, and the combination andarrangement of parts as will be hereinafter fully described and claimed.

In the drawing I I Figure 1 is a rear elevation of the latch casingshowing the bolt latch in an extended position,

Fig. 2 is a rear elevation of the latch casing showing the latch bolt ina retracted position,

Fig. 3 is a section taken on the line 83 of Fig. 1 looking in thedirection of the arrow,

Fig. 4 is a section taken on line H of Fig. 1 looking in the directionof the arrow, and

Fig. 5 is a section taken on the line 55 of Fig. 1 looking in thedirection of the arrow.

Referring to the drawings in detail it will be seen that the numeral 1designates a cas- Specification of Letters Patent. Application filedNovember 19, 1920.

Patented Oct. 18, 1921; Serial No. 425,149.

ing which may be of any preferred construction and as shown issubstantially rectangular in cross section having the lateral flangeouter periphery and provided with apertures 3 so that the casing may besecurely attached to a door in the usual manner. A block 4. is fixedlysituated in the casing toward the center thereof as shown in Fig. 1 whenthe latch bolt is iii a locked position.

A bell crank lever 7 is rigidly mounted on the cylindrical bar '8 whichis rotatably mounted in the casing 1. The portion of the bar 8 whichpasses through the bell crank is preferably square as indicated in Fig.1 so that this bell crank lever 7 will be actuated upon movement of thebar 8. A suitable operating eye 9 is attached to one end of the bar 8for rotating same. The bell crank lever for receiving the pin 13provided in the latch bolt 5. stop extension 14 is this arm 10 and isadapted to abut the end the latch bolt 5 is in an extended position.

he arm 11 of the bell crank lever 7 is provided with a shoulder 15 atits end and this shoulder 15 is provided with a slot for receiving therod 16 which is pivotally carried in the casingby means of a pin 17. Thesides of the slot in the shoulder 15 from each other toward the end of11 and form stops for the movement of the 1 rod 16 as will be laterdescribed. An expansion coil spring 18 is disposed around the bolt 16 soas to be between the eye 19 and washer 20. A roller 21 having a slottherein for receiving the rod 16 is disposed bethe bell Crank lever 7 isrotated so as to take the position shown in Fig. 2 of the drawingtendency oi a part of the spring to rotate the bell crank lever 7 but tothe contrary will push straight in alinement with the arm 11.

I have provided a tripping mechanism for the bell crank lever 7 whichconsists of a link 22 having a curved slot 23 therein for receivingthepin 24: provided on the arm 10 of the bell crank lever 7 One end ofthis link is used as shown at 25 and a pin extends through the ends ofthe yokes so as to pivotally support a trigger 26. This trigger 26consists of a shank 27 which is suitably pivoted intermediate its endsto the casing 1 as is shown at 28 and is provided with a right angularlyextending extension 29 which is adapted to abut the door jamb 30 thuspulling upon the link 22 and slightly rotating the bell crank leverefliciently to angle to the bottom of: that at this the arm 11 latchbolt 5 place the bar 16 at an the casing 1 and it will be seen time thespring will push upon at an angle and thus cause the totake an extendedposition.

The bolt slot 31 provided in the door jamb 3O isbeveled outwardly ortoward the irection in which the door will swing as shown at 32. Thebeveled portion 6 of the latch bolt 5 will engage the beveled portion 32and thus the spring 18 which will be pushing upon the latch bolt 5through the intermediacy of the bell crank lever 7 will cause these twobeveled surfaces to slide in relation toeach other and since may slidethe door will necessarily close as far as possible thus preventingrattling and at the same time keeping out wind and cold.

Obviously, the invention is not limited and restricted to the precise,and exact details of construction as illustrated and described, becauseit is susceptible of a variety of embodiments, and many minor mechanicalchanges may be made in such incorporation of the invention withoutdeparting fromv the substance or essence of the a trigger mechanism thebolt only preferred invention and without the sacrifice of any of itssubstantial benefits and advantages.

Having thus described my invention what I claim as new is i r 1.Incombination, a casing, a latch bolt slidable therein, a bell cranklever pivoted therein, one arm of said bell crank lever provided with aslot, a pin on said bolt adapted to ride in said slot, the other end ofsaid bell crank'lever provided with a shoulder having a slot therein, abar pivoted in the casing and having its end extending through and anexpansion the slot coil spring holding the latch bolt in an extendedposition through the 'intermedia'cy of the bell crank lever.

2. In combination, slidable therein, a mounted in the casing, one arm ofthe bell crank lever provided with a slot, a pin on the latch boltadapted to ride in the slot, the other arm of the bell crank leverprovided with a shoulder having a slot extended therethrough, a rodpivotally carried in the easing so that one end slot in the shoulder,and a spring dlSPOSECl on the rod so as to hold the latch in a retractedor extended positionas described and for slightly moving. the bell cranklever so as to shunt the latch bolt in an extended position. r i 1 I 3.In combination, a casing, a bolt slidable therein, a bell crank leverhaving one arm attached to the boltcfor sliding same, means in saidshoulder,

disposed on the rod for norma a casing, a latch bolt bell crankrotatably will extend through the i attached to the other arm of thebell crank I

